Solid oxide type fuel cell-use electrode support substrate and production method therefor
CA 2486931 A1 · Owner: Shimomura, Masatoshi · Inventors: Nagashima, Teruhisa; Shimomura, Masatoshi; Hata, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel cell-use electrode support substrate comprising a ceramic sheet having a porosity of 20-50%, a thickness of 0.2-3 mm and a+ surface area of at least 50 cm2, wherein a coefficient of variation of a measured air passage volume in a region measured by a JIS K 6400-compliant method falls within 5-20% or, in , addition, a surface roughness at a maximum roughness depth (Rmax) measured by a laser optical three-dimensional shape measuring device is 1.0-40 µm whereby the support substrate is homogenous and small in fluctuation of gas permeability, and can perform an anode electrode printing with a very close contact.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.